https://orcid.org/0000-0003-3968-1264
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ABSTRACT
The type of fuel, engine speed, and load are some of the parameters, which influence engine noise, vibrations, and exhaust emissions of an internal combustion engine. The present investigation is carried out to study the effect of isobutanol addition to methanol-gasoline blends on engine’s noise, vibration, and emission characteristics of an unmodified automotive SI engine operated at various engine speeds. The engine was fueled with 10 and 15% (v/v) blended fuels of methanol-gasoline (M10, M15) and methanol-isobutanol-gasoline (iBM10, iBM15). The blended fuels produced relatively high noise levels and less vibration in the vertical and longitudinal direction when compared with gasoline operation. The maximum noise level of 64.43dBA observed with the M15 blend and which is 4 dBA higher than gasoline. Only a slight variation in the total fuel consumption observed for all the test fuels at higher engine speeds. The emissions from the test fuels iBM10 and iBM15 showed a reduction in HC by 25 and 10% and CO emissions by 65 and 87%, respectively. The methanol-gasoline blends produced slightly higher CO2 and NOx emissions than gasoline.
Graphical Absract
Nomenclature
| SI | = | Spark ignition |
| CI | = | Compression ignition |
| dB(A) | = | A-weighted decibels |
| MPFI | = | Multi point fuel injection |
| MEMS | = | Micro-electromechanical system |
| LHOV | = | Latent heat of vaporization |
| RoPR | = | Rate of pressure rise |
| CO | = | Carbon monoxide |
| CO2 | = | Carbon dioxide |
| HC | = | Hydrocarbon |
| NOx | = | Nitrogen oxides |
| LHV | = | Low heating value |
| GEM | = | Gasoline-Ethanol-Methanol |
| SPL | = | Sound pressure level |
| NITI | = | National Institution for Transforming India |
Highlights
Blended fuels showed less vertical and longitudinal vibration accelerations.
Blended fuels produced slightly higher total noise level than gasoline.
Blend iBM10 and iBM15 exhibited a considerable reduction in HC and CO emissions.
Additional information
Notes on contributors
Bhavin K Bharath
Bhavin K Bharath was born in Kerala, India. He did his B.Tech in Mechanical Engineering from Government Engineering College, Kozhikode, affiliated to Calicut University; M.Tech in Integrated Design and Manufacturing from Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu. He is currently pursuing his Ph.D. from the National Institute of Technology, Tiruchirappalli, Tamil Nadu. He possesses seven years of experience in academics. His research interests include; Alternative fuels with particular emphasis on Alcohol biofuels, Nanofluids application in automotive engines, Internal combustion engines’ noise, vibration and emission characteristics, and renewable energy.
Arul Mozhi Selvan V
V. Arul Mozhi Selvan is currently working as an Associate Professor in the Department of Mechanical Engineering and former Associate Dean (Academic) for the Post Graduate Programmes, National Institute of Technology Tiruchirappalli (NIT-T), a Centrally Funded Technical Institute of National Importance, Government of India. He is currently serving as President of Officers’ Club of NIT-T. He has 24 years of Teaching and Research experience at B.Tech., M.Tech. and Ph.D. Levels. He graduated M.Tech. Degree in Energy Engineering and Ph.D. Degree in Mechanical Engineering from National Institute of Technology (NIT-T), Tiruchirappalli. He guided 5 Ph.D. Scholars and currently guiding 10 research scholars leading to Ph.D. Degree. He is serving as a Faculty Advisor for the National Level All Terrain Design, Fabrication and Racing Competition - BAJA, organized by SAE India every year. Also, he is the Coordinator for “NITT Community Radio Station”, where variety of programs are being created and broadcasted through “NITT Radio FM 90.8 MHz” and through Internet Radio “http://radio.nitt.edu” to provide “Education to the Society”. Dr. V. Arul Mozhi Selvan received “Green Environment Award” for his self-financed contribution towards creation and maintenance of Green Environment at NIT-T. He filed 3 Patents on the theme “Waste Management” to Intellectual Property India, Government of India. Dr. V. Arul Mozhi Selvan is the Life Member of Indian Society for Technical Education Member and Member of Society of Automotive Engineers (SAE), India. Based on his technical contributions, his biography was included in Marquis Who’s Who in the World in the year 2011.